/* Implementation of the textdomain(3) function.
Copyright (C) 1995-1998, 2000, 2001, 2002 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published
by the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
USA. */
#ifdefHAVE_CONFIG_H
# include<config.h>
#endif
#include<stdlib.h>
#include<string.h>
#ifdef_LIBC
# include<libintl.h>
#else
# include"libgnuintl.h"
#endif
#include"gettextP.h"
#ifdef_LIBC/* We have to handle multi-threaded applications. */
# include<bits/libc-lock.h>
#else/* Provide dummy implementation if this is outside glibc. */
# define__libc_rwlock_define(CLASS, NAME)
# define__libc_rwlock_wrlock(NAME)
# define__libc_rwlock_unlock(NAME)
#endif/* The internal variables in the standalone libintl.a must have different
names than the internal variables in GNU libc, otherwise programs
using libintl.a cannot be linked statically. */
#if !defined_LIBC
# define_nl_default_default_domain libintl_nl_default_default_domain
# define_nl_current_default_domain libintl_nl_current_default_domain
#endif/* @@ end of prolog @@ *//* Name of the default text domain. */externconstchar _nl_default_default_domain[] attribute_hidden;
/* Default text domain in which entries for gettext(3) are to be found. */externconstchar *_nl_current_default_domain attribute_hidden;
/* Names for the libintl functions are a problem. They must not clash
with existing names and they should follow ANSI C. But this source
code is also used in GNU C Library where the names have a __
prefix. So we have to make a difference here. */
#ifdef_LIBC
# defineTEXTDOMAIN __textdomain
# ifndefstrdup
# definestrdup(str) __strdup (str)
# endif
#else
# defineTEXTDOMAIN libintl_textdomain
#endif/* Lock variable to protect the global data in the gettext implementation. */__libc_rwlock_define (extern, _nl_state_lock attribute_hidden)
/* Set the current default message catalog to DOMAINNAME.
If DOMAINNAME is null, return the current default.
If DOMAINNAME is "", reset to the default of "messages". */char *
TEXTDOMAIN (domainname)
constchar *domainname;
{
char *new_domain;
char *old_domain;
/* A NULL pointer requests the current setting. */if (domainname == NULL)
return (char *) _nl_current_default_domain;
__libc_rwlock_wrlock (_nl_state_lock);
old_domain = (char *) _nl_current_default_domain;
/* If domain name is the null string set to default domain "messages". */if (domainname[0] == '\0'
|| strcmp (domainname, _nl_default_default_domain) == 0)
{
_nl_current_default_domain = _nl_default_default_domain;
new_domain = (char *) _nl_current_default_domain;
}
elseif (strcmp (domainname, old_domain) == 0)
/* This can happen and people will use it to signal that some
environment variable changed. */
new_domain = old_domain;
else
{
/* If the following malloc fails `_nl_current_default_domain'
will be NULL. This value will be returned and so signals we
are out of core. */
#ifdefined_LIBC || definedHAVE_STRDUP
new_domain = strdup (domainname);
#else
size_t len = strlen (domainname) + 1;
new_domain = (char *) malloc (len);
if (new_domain != NULL)
memcpy (new_domain, domainname, len);
#endifif (new_domain != NULL)
_nl_current_default_domain = new_domain;
}
/* We use this possibility to signal a change of the loaded catalogs
since this is most likely the case and there is no other easy we
to do it. Do it only when the call was successful. */if (new_domain != NULL)
{
++_nl_msg_cat_cntr;
if (old_domain != new_domain && old_domain != _nl_default_default_domain)
free (old_domain);
}
__libc_rwlock_unlock (_nl_state_lock);
return new_domain;
}
#ifdef_LIBC/* Alias for function name in GNU C Library. */weak_alias (__textdomain, textdomain);
#endif